Process for making building-blocks.



R. M. MINES.

PROCESS FOR MAKING BUILDING BLOCKS.

APPLICATION FILED MAR. I9l I9I5.

g1k l Patented Nov. 30, 1915.

Mzwssis.

INFM/70E ROBERT-M. JONES, OF. NIAGARA FALLS, NEW YORK.

PROCESS FOR MAKING BUILDING-BLOCKS.

Specication of Letters Patent.

Patented Nov. 30, 1915.

Application led March 19, 1.915. Serial No. 15,459.

To all whom t may concern:

Be it known that I, ROBERT M. JONES, a citizen of the United States ofAmerica, residing in the city of Niagara Falls, county of Niagara,-andState of New York, have invented certain new and useful Improvements inProcesses for Making Building- Blocks, of which the following `is afull; clear, and exact description.

My process relates generally to processes formaking building blocks, andmore particularly to the making of building blocks having stucco oroverlaid faces.

In the prior|building art, when a stucco faced wall has been made, thewall has been first constructed of tile, building blocks or bricks inthe usual manner and the stucco Morepver, by my process, each block isso formed that when placed in the wall, the

same is made water-proof and frost-proof.

In the accompanying drawings, forming part of this application, I haveshown one manner of carrying out my-process, it being obvious that otherdevices may be employed in carrying out thersame.

In the drawings, Figure 1 shows a longi.

tudinal section through a cement building block as it is being formedand before it is removed from the mold. Fig. 2 is a similar section of abuilding block having a hollow tile body. Fig. 3 is a perspective Viewof a finished block. p, y

Referring to Figs. 1 and 2, where I show one form of apparatus forcarrying out my process, 5 represents a pallet board and 6 the lowerportion of my mold placed on-the upper surface of the same. The heightof the longitudinal edge at one side of the lower portion of the mold 6is greater than at the other side. The narrow side is at that part ofthe mold which forms the lower edge of the block.

7 represents the upper portion of my mold wherein is molded the cementbody portion of the block. The inside width of this partv of the mold isless than the inside width of the lower part of the mold 6, thus formingan overhanging lip 16, and the upper por extends entirely around theoutside of thelower portion 6 of the mold. The mold 7 is providedl withan inwardly projecting V- shaped rib 14, extending across that portion of the. mold which forms the uppersurface of the block, and it s alsoprovided with inwardly projecting, V-shaped ribs 15, extending acrossthe surfaces, which form the end f faces of the block. This portion ofthe mold is, of course, provided with suitable hinged means, (not shown)whereby it may be opened-when the block .is molded and set. In Fig. 2,the mold 17 isprovided at one edge with a hinged member 8, which extendsacross the'lower edge of the block. This last mentioned form is designedfor blocks, which have a tile or terra-cotta body. 9 is a strip, whichforms partof the mold, and which is placed therein so as to extendacross the upper edge of the block.

When carrying out my process by the device'herein shown and described,the lower portion of the mold 6 is first placed upon the pallet board5'and sand 10 placed within the same. This sand is struck off so thatits upper surface will be a short distance below the upper edge of thelower portion of the-mold 6. Upon this sand is now placed fine particlesof material, which are to form the stucco, and upon the line particlesare placed the coarse particles of-stucco. After the coarse stuccomaterial isin place, a board or other flat surface is placed thereupon,and pressure brought to bear upon the upper face of the same, wherebythe coarse stucco material will be forced down in the fine stuccomaterial and embedded into the sand 10. The board is then removed, andon top of the embedded stucco is placed the waterproof and cementmixture 11. This mixture preferably extends up to the upper edge of thelower portion of the mold 6 and is struck ofi" at a level thereto. Theupper portion of the mold 7 is now placed over the 1owerporit is obligedto pass between the fine stucco tionV 6 of the mold and suitably clampedin .i

position. Into this mold is now poured the cement mixture, which is toform the body I8 of the block. y l' It will be seen that by firstplacing the fine stucco material and -then the coarse stucco materialthat when the coarser stucco material is embedded into the sand bed 10,

material, and thus when the water-proof material is poured upon theupper surface of the embedded material, the finer material prevents thesaine from passing down between the coarser material and coming incontact with the face of the stucco .and in anywise distiguri-ng ordiscoloring it. After the block has set sufficiently, the mold isremoved and the sand brushed off from the faces of the projectingstucco, which are clean and free from any cement deposits,

and are in substantially the same condition as when first embedded intothe cement core.

When using the form of mold shown in Fig. 2, the mold 17 is placed uponthe pallet board 5 and the sand bed 10 and stucco material placedtherein in the same manner as above described, but before thewater-proofing mixture is poured upon the stucco material, the strip 9is placed in the mold. While the ,water-proofing -mixture is yetplastic, the tile body is placed in position on top thereof and the ribsofthe tile embedded into the mixture so that when the mixture is set itWill be -securely fastened to' said tile. After the mixture is moldedand set, the hinged member 8 of the Cmold may be raised so that theVproduct can be easily Withdrawn from the mold 17.

Obviously, some slight modiication of the process and apparatus hereinshown and designed my scribed may be made without departing from thespirit of my invention or the scopeA of the appended claims, and I donotwish to be limited t0` the exact embodiment 'herein shown anddescribed.

Having thus described my invention, what I claim is:

1. The process of making building blocks comprising the formation of asand bed of suitable thickness, then the placing of relatively inestucco material on the sand bed, l

then the formation of a layer of relatively 4'coarse stucco materialover the fine material,

then forcing the coarse material through the line ymaterial and into thesand bed, then covering the embedded stucco with a suitablel land thenplacing contact with said into a mold, a suitable cement mixtureoversaid water-proofing mixture, to form the body of the block.

In testimony whereof, I have hereunto scribing witnesses.

ROBERT M. JONES.

Witnesses z J. WM. ELLIS WALTER H. IIELLEY.

name in the presence of two sub-v

